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N0 MODEL.

v PATENTED JAN. 5, 19014 T. J. LINDSAY.

SHAFT BEARIG. v i APPLIOATION FILED JUNE 26, 1901.

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F11/gig 60 6a Amm/VH PATENTBD JAN. 5, 1904.

T. J. LINDSAY.

SHAFT BEARING.

APPLIOATION FILED JUNE 26, 1901.-

2 SHEETS-SHEET 2.

-NO MODEL.

IN VENTUH UNITED STATES y atented January 5, Q.

PATENT OFFICE.

THOMAS J. LINDSAY, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF TOWILLARD I-IARMON, OF INDIANAPOLIS, INDIANA.

SHAFT-BEARING.

SPECIFICATION forming part of Letters Patent No. 748,625, dated January5, 1904.

v Application iiled Tune 26, 1901. Serial No. 66,146. (No model.)

To all whom it may concern,.-

Be it known that I, THOMAS J. LINDSAY, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,haveV invented certain new and useful Improvements in Shaft-Bearings, ofwhich the following is a specification.

The object of my said invention is to produce a box or bearing forshafts which shall io be provided with means for efficiently and evenlytaking up the wear which may result from use, and thus provide a bearingespecially adapted to heavy service and hard usage and to situationswhere even running t5 and therefore eXactness of fit are desirable.

A box or bearing embodying my said in ve`ntion will first be fullydescribed, and the novel features thereof then pointed out in theclaims.

Referring to the accompanying drawings, which are made a part hereof,and on which similar reference characters indicate similar parts, Figurelis a top or plan view of abox or bearing of the variety in question;Fig. 2, a central longitudinal vertical sectional view thereof as seenwhen looking in the direction indicated by the arrows from the dottedline 2 2 in Fig. 1; and Figs. 3, 4, and 5 transverse vertical sectionalViews as seen when looking in the directions indicated by the arrowsfrom the dotted lines 3 3, 4 4, and 5 5, respectively, in Figs. 2 and l.l

The main shell or body 51 of my improved bearing may be and preferablyis formed as a single casting, as shown in most of the parts, as a boxand a cap. I have shown this structure divided into two parts in Fig. 5;but in the other figures it is shown as a single structure, as Ipreferto make it. This structure is cored out in the casting and containssuitable chambers for the shaft, the box-linings, the lining-tighteners,and a supply of oil, all as shown in the drawings. It is mounted in anysuitable manner, according to the use to which the shaft carried therebyis put.

drawings, although it may be made intwo' It is shown as adj ustably Asis obvious, however, the method of mounting this box or bearing is to bevaried in accordance with the requirements of the service which is tober performed.

The construction shown is one which I have designed for use in largerotary pressureblowers and is according to my experience a superior formfor the purpose.

The main shell or body 5l is first cast into approximately the formshown in the drawings and is then bored out first to a size adapted toreceive the tapered sleeves and 61, constituting the lining-tighteners,and then at the central portion to a larger size -adapted to receive thesleeve-nut 62, which,

as best shown in Fig. 2, connects the tapered sleeves 60 and 61. Thescrew-threads by which these parts are connected are righthandscrew-threads on one of the sleeves and the corresponding portion of thenut and lefthand screw-threads on the other sleeve and the correspondingportion of the nut, so that rotating the nut draws the sleeves togetheror forces them apart synchronously. The sleeves 60 and 61 are preventedfrom rotating by studs 63 and 64, carried by the body 5l, which entergrooves formed to receive them in said sleeve, as best shown in Figs. 2and 5. Within the sleeves 60 and l6l is placed the box-lining 70. Thisbox-lining may be of any suitable metal to form a bearing for a shaft,such metals as brass, bronze, and Babbitt metal being preferable. Thislining is slitted nearly from end to end in several places in order thatit may be compressed from time to time by the pressure applied by thetapered sleeves, and wear thus taken up and the bearing kept tight. Thesections are, however, held togetherpand to position by small portions71 at the ends, so that the ends of the linings are substantially in theform of continuous rings, the slits extending entirely through at notmore than one place or point. Near the upper side, where the lining iscut away to receive the oil-elevating chains, fragments are left at theparts marked 72, (see especially Fig. 3,) so that the central partsabove these points shall not be separated from the others. Thisbox-lining is held from turning within the tapered sleeves by means of astud 73, carried by one of said IOO sleeves and entering the groove insaid lining, as is best shown in Figs. 2 and 5.

The lower portion of the body 5l, as shown, contains a large cavity foroil. Two oil-elevating chains 8O and 81 are carried by the shaft S,which runs in the bearing, and extend down into this oil-cavity, groovesbeing cnt through the lining part of the way around the shaft, as bestshown in Fig. 4, to permit the chains to rest on the shaft and suitablevertical openings being likewise cut for the passage of said chainsthrough the tapered sleeves containing the lining-tighteners.

The ends of the bore in the body 5l are closed by annular rings 90 and91, as shown in Fig. 2, and any oil which works lengthwise along theshaft S is thus stopped before emerging from the bearing and caused toHow back into the oil-cavity. While this particular lubricating meansshown and described is considered particularly desirable for use withthis invention, it does not form any part of each direction toward eachend on the outside, correspondingly tapered sleeves surrounding the endsof said lining, a sleeve-nut connecting the adjacent ends of saidsleeves and engaging therewith by right and left hand screw-threads,means for lubricating the bearing, and a suitable body in which saidparts are mounted and carried,'substan tially as set forth.

2. The combination, in a shaft-bearing, of a body containing a bore forthe lining and its compressing devices and a cavity for the oil, twotapered sleeve-like' lining-tighteners in said bore and providedrespectively with right and left hand screw-threads upon their adjacentends, a sleeve-nut correspondingly screwthreaded engaging with saidliningtighteners, a compressible lining within said lining-tighteners,studs mounted in the body and engaging with said lining-tighteners toprevent them from turning, and a stud in a lining-tightener engagingwith the lining and preventing it from turning, rotary movement of thelining and its tightener being thus prevented while longitudinalmovement is permitted, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at'Indianapolis, Indiana, this 21st day of June, A. D. 1901.

THOMAS J. LINDSAY.

Vitnesses:

CHESTER BRADFORD, L. H. CoLvIN.

